bgp update destroying transit on redback routers ?

Igor Ybema igor at
Thu Dec 1 20:15:48 UTC 2011

Hi all,

A new update. A coder from ericsson told me that the problem is not
4-byte asn related. It is related to aggregator-asn=0 and
aggregator-ip= Ericsson does not accept this as valid ASN and

The question is now, are all other vendors wrong in accepting this
attribute (clearly ASN=0 and IP= isn't corresponding to the RFC
stating 'which shall contain its own AS number and IP address') or is
Ericsson being to strict?

regards, Igor

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